package com.edu.mapper;

import com.edu.bean.Student;

import java.util.List;

/**
 * @Author:mx
 * @Date:2025/10/10-10:54:33
 */
public interface StudentMapper {

    List<Student> selectStudentByMaxAge(int age);

    //查询一共有多少个学生
    int selectStudentNum();
}
